Nissan Murano Z51. Instruction — part 509
EC-44
< SYSTEM DESCRIPTION >
[VQ35DE]
ELECTRIC IGNITION SYSTEM
Component Description
INFOID:0000000005536496
1.
ASCD steering switch
2.
CANSEL switch
3.
RESUME/ACCELERATE switch
4.
SET/COAST switch
5.
MAIN switch
1.
Fuel level sensor unit and fuel pump
harness connector
2.
Fuel level sensor unit and fuel pump 3.
Fuel pressure regulator
: Vehicle front
JMBIA1121ZZ
Component
Reference
Accelerator pedal position sensor
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)
Engine coolant temperature sensor
Ignition signal
Knock sensor
Mass air flow sensor
TCM
Throttle position sensor
AIR CONDITIONING CUT CONTROL
EC-45
< SYSTEM DESCRIPTION >
[VQ35DE]
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AIR CONDITIONING CUT CONTROL
System Diagram
INFOID:0000000005536497
System Description
INFOID:0000000005536498
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.
JMBIA1835GB
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
2
Air conditioner
cut control
IPDM E/R
↓
Air conditioner relay
↓
Compressor
Engine coolant temperature sensor
Engine coolant temperature
Accelerator pedal position sensor
Accelerator pedal position
Battery
Battery voltage*
2
Refrigerant pressure sensor
Refrigerant pressure
Power steering pressure sensor
Power steering operation
Combination meter
Vehicle speed*
1
BCM
Air conditioner ON signal*
1
EC-46
< SYSTEM DESCRIPTION >
[VQ35DE]
AIR CONDITIONING CUT CONTROL
Component Parts Location
INFOID:0000000005536499
1.
Intake valve timing control solenoid
valve (bank 1)
2.
Intake valve timing control solenoid
valve (bank 2)
3.
Electronic controlled engine mount
control solenoid valve
4.
Fuel injector (bank 2)
5.
A/F sensor 1 (bank 2)
6.
Cooling fan motor-2
7.
Ignition coil (with power transistor)
and spark plug (bank 2)
8.
Camshaft position sensor (PHASE)
(bank 2)
9.
Crankshaft position sensor (POS)
10. Engine coolant temperature sensor
11.
Cooling fan motor-1
12. ECM
13. Refrigerant pressure sensor
14. Battery current sensor
15. IPDM E/R
16. Mass air flow sensor (with intake air
temperature sensor)
17. Electric throttle control actuator
18. EVAP service port
19. Power valve actuator 2
20. EVAP canister purge volume control
solenoid valve
21. Camshaft position sensor (PHASE)
(bank 1)
22. Ignition coil (with power transistor)
and spark plug (bank 1)
23. A/F sensor 1 (bank 1)
24. Fuel injector (bank 1)
25. VIAS control solenoid valve 1 and 2
26. Power valve actuator 1
JMBIA1108ZZ
AIR CONDITIONING CUT CONTROL
EC-47
< SYSTEM DESCRIPTION >
[VQ35DE]
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1.
Mas air flow sensor (with intake air
temperature sensor)
2.
Electric throttle control actuator
: Vehicle front
1.
Ignition coil (with power transistor)
and spark plug (bank 1)
2.
Fuel injector (bank 1)
3.
Fuel injector (bank 2)
4.
Ignition coil (with power transistor)
and spark plug (bank 2)
5.
Knock sensor (bank 2)
6.
Knock sensor (bank 1)
: Vehicle front
1.
Crankshaft position sensor (POS)
2.
Camshaft position sensor (PHASE)
(bank 1)
3.
Camshaft position sensor (PHASE)
(bank 2)
: Vehicle front
JMBIA1109ZZ
JMBIA1110ZZ
JMBIA1114ZZ
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